Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

MFC C++ file I/O using CStdioFile text file

Posted on 1997-12-04
1
Medium Priority
?
1,103 Views
Last Modified: 2008-02-01
This should be easy for anyone knowing MFC and C++ (not me)
I've created a dialog box application using MFC which just opens a CStdioFile text file for output, prompts for data and writes the data to the file.

I've created a class based on CStdioFile and open the file in the main module.
When I try to reference that class in my dialogbox module I get an undeclared variable compiler error.
The dialog box code doesn't know about the class that was declared in the main routine.  The sample code Microsoft provides is something short of helpful (along with the 3 C++ books I've bought.)
Esto mi hode.
 
0
Comment
Question by:jdn
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 3

Accepted Solution

by:
gaohong earned 200 total points
ID: 1174840
You have to include the include file where you redefined
CStdioFile's behaviour, then declare an variable of type
CStdioFile or whatever you redefined type, then use that
variable.

good luck
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
IntroductionThis article is the second in a three part article series on the Visual Studio 2008 Debugger.  It provides tips in setting and using breakpoints. If not familiar with this debugger, you can find a basic introduction in the EE article loc…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.

618 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question